Means for operating log-haul clutches.



No. 850,250. PATENTED APR.16,-19o7.

- y F. P." QUINN.

MEANSPOR OPERATING LOG HAUL GLUTGHBS.v

APPLICATION FILED JAN.23.1907.

y /mmum w/r/vfssgs: 29

K Floyd P. Quinn.

N MMM Arme/vir FLOYD P. QUINN, OF VANCOUVER, BRITISH COLUMBIA, CANADA.

MEANS FOR OPERATING LOG-HAUL CLUTCHES.

Specication of Letters Patent.

`Patented April 16, 1907.

Application iled January 23, 1907. Serial N0. 353,686.

To all whom it `19a/Ly concern.'

Be it known that I, FLOYD P. QUINN, a citizen of the United States of America, residing at Vancouver, in the Province of British Columbia, Canada, have invented a new and useful Improvement in Means for Operating Log-Haul Clutches, of which the following is a specification.

This invention relates to an improved means for automatically applying the friction-clutch by which the wire-rope drum of a log-hauling engine is connected to the mechanism by which it is driven. In engines of this class a frictional driving contact is provided between the driving-gear and the wire-rope drum, and the latter part is pressed into frictional contact with the driving-gear and is rotated thereby when it is desired to haul. The end pressure necessary to provide the required friction is usually applied to the wire-rope reel on the shaft through the mediumof a central stem and cotter in the opposite end ofthe driving-shaft, the pressure being applied to the central stem by a screw rotatable by means of a hand-lever in a nut secured to the engine-frame. In some cases the lever and screw are dispensed with and a huid-operated piston imparts the desired end movement and pressure. These methods require a manual application and are open to various other objections.

My object has therefore been to apply to the screw by which the end movement and pressure is attained a means whereby the screw may be rotated automatically when steam is admitted to the engine, provision being of course made whereby the wire-rope drum may be allowed to run free if the engine is required to operate a second drum.

The invention is fully described in the following speciflcation, reference being made to the drawings by which it is accompanied, in which Figure 1 is a verticallongitudinal section through a wire-rope drum, showing the fri-ctional connection between the drum and the driving-gear and the application of my device thereto Fig. 2, a cross-section on the line A A; Fig. 3, a cross-section on the line B B.

In the drawings, 2 represents a portion of the driving-gear wheel, which is keyed on the shaft 3 and by which this shaft is rotatable in bearings in the frame 4 of the log-haul. The wire-rope reel 9 runs free on this shaft 3, but may be secured to the gear 2 to rotate with it by an annular V-groove on the flange 7 of the reel engaging in frictional contact a correspondingly-shaped ring 6, preferably of wood, on the adjacent side of the drivinggear 2.

Endwise movement is imparted to the reel to set up the required friction by means of a cotter 10 in a cotter-hole 11 through the shaft 3, the outer ends of which cotter bear through the medium of a washer on the end of the reel 9. A central stem 12 bears on the mid-length of the cotter 1() in the shaft, and

-its outer end projects beyond the end of the shaft 3 outside of its bearing in the frame 4. A spring 5, interposed between the gear 2 and the reel 9, holds the frictional surfaces normally out of contact.

The parts thus far described are common in most hauling-engines of this class, and it is to the provision of a means by which an end movement and pressure maybe automatically applied to the stem 12 that my improvement has been directed.

Secured to or integral with the end of the shaft 3, which projects outside of the bearing in the frame 4, is a nut 15, adapted to receive a short quick-pitch double-threaded screw 16, the inner end of which is fitted on the outwardly-projecting end of the pin 12. Toward the outer end of this screw is keyed or otherwise secured a cross-bar 18, by which.

the screw may be rotated in the nut, a coilspring 17 being interposed between the nut and the cross-arm, which will backwardly rotate the screw and normally maintain it clear of the end of the pin 12.

On the outer end of the screw 16 is mounted, so as to be susceptible of limited aXial movement on it, a friction-disk 20, which disk is provided with projections 19 to engage the ends of the cross-arm 18 to rotate it while permitting the endwise axial movement before referred to. On an outwardlyprojecting boss 13 of the disk 2O is rotatably mounted a disk 22, having secured to its face adjacent to the disk 20 a friction-disk 23, of indurated fiber or similar material, the pressure between 22 and 2O through the medium of 23 being regulated by a nut 21,iitting a fine thread on the end of the boss 20. From the outer edge of the disk 22 is carried back toward the frame 4 of the machine a hollow cylindrical body 24, and secured to the frame 4, so as to project within the mouth of IOO IIO

cored chamber 26, which chamber is in com- Y arm 18.

munication through apipe 27 with the steampipe which serves the cylinders ofthe loghaul engine, so that a fluid-pressure may be admitted to the chamber 26 whensteam is admitted to the engine.v Fitted intov a recessed groove round the circumference of the ring 25 is a ring 28, of metal, having preferably an outer layer ofindurated fiber orl engine is started a 'Huid-pressure will be admitted through the pipe 27 to the annular chamber 26 and acting on the plungers 29 will press the ring 28 into frictional contact with the cylinder 24, holding it against rotation. of the friction set up by means of the nut 21 between it and the ring 23 be also prevented from rotating and will hold the screw 16 by means of the engagements 19' andthe cross- As the gear-Wheel 2 rotates and turns vwith it the shaft 3, to which-it issecured, the nut 15 as it turns with theA shaft will draw the screw 16, which is heldagainst rotation, tightly upon the stem `12 and will endwise move the wire-ropereel 9 into 4frictional engagement with lthe lannular frictionring 6 of the gear-wheel 2, so that the reel 9 will rotate with the gear and its shaft. On release of the pressure fromthe annular chamber 26, caused eitherby the stopping of the engine or by independent means provided, the outward pressure of the plungers 29 against the ring 28 and against the inner side of the cylinder 24 that body and its connected parts will no longer be secured to the frame of the engine, but will be free to rotate, and the coil-,spring 17, placed under rotational strain by the former movement of the nut 15 on the screw, willy exercise its effort and rotate the screw through the cross-arm 18, to which the spring 17 is attached, to withdraw the screw from'contact with the stern 12, which effortwill be assisted bythe spring 5 between the wire-rope reel and the gear-wheel 2.

I-Iaving now particularly described my invention and the manner of its operation, I hereby declare that what I claim as new, and desire tol be protected in by Letters Patent,

1. In a friction-clutch, means for imparting an endwise movement to a freely-rotatable mechanism to bring it into frictional contact with the driving mechanism on a shaft on which the freely-rotatable mechanism runs, a nut secured to the shaft, a screw o erable in said nut, and means for holding t ye screw against rotation by a fluid-pressure The friction-disk-2O will to the extent from the pipe which serves the engine of the driving mechanism.

2. In a friction-clutch, means for impartl ing an endwise movement to a freely-rotatable mechanism to bring it into driving contact with the driving mechanism on a shaft on which the freely-rotatable mechanism runs, a nutsecured to the shaft7 a screw operable in said nut, means for holding the screw against rotation by a fluid-pressure from the pipe which serves the engine of the driving mechanism, and a spring between the nut and the screw to withdraw the screw from the nut.

3. In a friction-clutch, whereby a freelyrotating mechanism is'securedto a-driving mechanism on a shaft on which the free mechanism runs, means for imparting an endwise movement to the free mechanism to bring it into contact withy the driving mechanism said meanscomprising a nut secured to the end of the shaft of the driving mechanism, a screw operable in said nut and contacting with the means for transmitting the endwise movement to the free mechanism, a friction-disk in driving engagement with the screw, a coil-spring between the nut and the screw, a second friction-disk in contact with the one before mentioned, means for holding said disks in frictional contact, and means operative by a fluid-pressure from the engine for holding the last-named friction-disk against rotation whereby the screw is rotated in the nut;

4. In a friction-clutch whereby a freelyrotating mechanism is secured to la driving mechanism on a shaft on which the free mechanism runs, means'for imparting an endwise movement to the free mechanism to bring it into contact with the driving mechanism said means comprising a nut secured to the end ofthe shaft ofthe driving mechanism, a screw operable in said nut and contacting` with the means for transmitting the endwise movementto the free mechanism, a rotatable part in driving engagement with the screw, a second rotatable part in frictional engagement with the aforementioned part and having means for varying the pressure of such frictional engagement, means for frictionallyy securing the last-mentioned part to a fixed IOO IIO

movable in the shaft one end of which stem bears on the cotter and the other end pro* jects beyond the end of the shaft outside of the bearing, a nut secured to the outer end of the shaft, a screw operable in said nut and bearing on the outwardly-projecting end of the stem, a driving-arm secured to said nut, a spring between the nut and the drivingarm that will rotate the screw from engagement with the end of the stem, a frictiondisk in driving engagement with the drivingarm of the screw, a member rotatable on and in i'rictional engagement with the last-named friction-disk, means for regulating the pressure and varying the friction between the two last-named parts, a ring concentric with the driving-shaft and secured to the frame of the machine said ring having an annular chamber and means for delivering a fluidpressure thereto from the steam-pipe which serves the engine of the driving-gear, a series of plungers radiall7 projecting through the ring and in communication With the annular chamber therein, a friction band or ring surrounding the outer end of such plungers7 and a hollow cylinder against the inner side of which said friction-ring contacts which. cylinder is integral with or secured to the outer rotatable friction member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

A FLOYD P. QUINN.

Witnesses:

ROWLAND BRITTAIN, OLIVE S. CARMAN. 

